Separating glued fuselage after it has dried

drill that hole the size of some styrene tubing,,,,,,,or the size of the outside piece of a tubing telescope

then, you could just glue your tubing in there after you reglue the exhaust manifold, and your prop would still be a slip fit if that is what you wanted

Rex

you didn't say what kind of glue you used.  There is such a thing as a CA debonder if you used CA. I have used it and it works fine.  Solvent cements sometimes make a bond that isn't super strong and you can sometimes take them apart with sheer force, but it is a risk.  In any case you'll need to redo the seams and paint.

That might very well work! Thanks!

That would be a very difficult proposition. You could drill a hole where the prop goes, shake the part out if you haven't already, then use that hole to reglue the part into place. Just an idea...